Results 41 to 50 of about 21,307 (193)

Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
In this study, we scrutinized floral enantiostyly in Mormodes orchids, a unique trait within Orchidaceae first observed by Charles Darwin. We hypothesize how intricate column twisting drives strategic pollinarium placement onto opposite sides of the thorax of male euglossine bees, enhancing cross‐pollination.
Arthur Domingos‐Melo   +2 more
wiley   +1 more source

Pollination ecology of New Zealand orchids : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University [PDF]

open access: yes, 2002
The New Zealand orchid flora comprises twenty-five genera and at least 100 species occurring throughout the country. Although the number of endemic species is high (69%) only four genera are endemic to New Zealand.
Lehnebach, Carlos A
core  

Local and landscape features of urban fragments determine the occurrence of stingless bees As características locais e paisagísticas dos fragmentos urbanos determinam a ocorrência de uma espécie de abelhas sem ferrão

open access: yesInsect Conservation and Diversity, Volume 18, Issue 6, Page 1027-1036, November 2025.
Both local and landscape factors associated with habitat availability and quality determine the persistence of stingless bees across fragments. Places where the species occurs have local and landscape characteristics distinctive from those where it is absent.
Yasmine Antonini   +2 more
wiley   +1 more source

ameaça da emergência climática para os polinizadores:

open access: yesREMEA - Revista Eletrônica do Mestrado em Educação Ambiental, 2023
Além da comprovada alteração nas populações de animais polinizadores em decorrência do uso excessivo de pesticidas, estão sendo evidenciadas mudanças ambientais consideráveis levandoà emergências climáticas. As chuvas e fenômenos climáticos imprevisíveis alteram a vegetação, provocando mudanças nos padrões comportamentais e temporais de muitos ...
Fernanda Nara Pereira Ingenchki   +3 more
openaire   +1 more source

Dieta de murciélagos nectarívoros del Parque Nacional Cerros de Amotape, Tumbes

open access: yesRevista Peruana de Biología, 2011
En el Perú se reporta la presencia de 18 especies de murciélagos nectarívoros, sin embargo se cuenta con poca información sobre la dieta de estas especies.
Edith Arias   +2 more
doaj   +1 more source

Effect of the isolation of Sterculia apetala trees on the emergence of seedlings in Pantanal [PDF]

open access: yes, 2013
Árvores de Sterculia apetala não são derrubadas durante a conversão de florestas em pastagens devido à consciência dos proprietários rurais de que essas árvores abrigam 95% dos ninhos de arara-azul no Pantanal. Nosso objetivo foi comparar a porcentagem
Hay, John Du Vall   +3 more
core   +3 more sources

Unexpected spatial aggregation between two species of hummingbirds and their inconsistent spatial interactions with native and exotic plants in an urban ecological reserve

open access: yesIbis, Volume 167, Issue 4, Page 927-944, October 2025.
Hummingbirds play an important role as pollinators and are one of the primary examples of animal–plant coevolution. However, factors such as land‐use change, urbanization, exotic species introductions and the disappearance of native plants can negatively affect the persistence of hummingbird populations.
Gonzalo A. Ramírez‐Cruz   +4 more
wiley   +1 more source

INSETOS DIPTERAS COMO POLINIZADORES EM ORCHIDACEAE

open access: yesRevista Uningá, 2015
A polinização é o principal processo de reprodução emplantas, e os insetos são um dos grupos mais atuantes nessemecanismo. Nas orquídeas os membros da ordem Hymenopterase destacam, entretanto dípteras, lepidopteras ecoleopteras também exercem este papel.
POLIZEL, ALEXANDRE LUIZ   +2 more
openaire   +3 more sources

Interaction networks and the use of floral resources by male orchid bees (Hymenoptera: Apidae: Euglossini) in a primary rain forests of the Chocó Region (Colombia)

open access: yesRevista de Biología Tropical, 2015
Orchid bees are important keystone pollinators from the Neotropics. With the aim to study the relationships between orchid bees and their nectar and aromatic host species, we made systematic samplings of males across two conservation areas in the ...
Rodulfo Ospina-Torres   +4 more
doaj  

Entomofauna asociada a la polinización del cultivo de cacao nativo, San Ignacio Moxos, Beni, Bolivia

open access: yesRevista de Investigación e Innovación Agropecuaria y de Recursos Naturales
El cacao Teobroma cacao L., utilizado principalmente para la obtención del chocolate, es un cultivo perenne que se caracteriza por ser una planta que crece bajo sombra, originario de Sud América (Bolivia, Perú y Ecuador), siendo nuestro país, parte de ...
Ángel Fernando Copa Bazán   +2 more
doaj   +1 more source

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